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Analog Devices Inc./Maxim Integrated MAX419CSD+T
- Part No.:
- MAX419CSD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX419CSD+T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,415
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Product details
Overview
MAX419CSD+T from Maxim Integrated is a quad, single-supply operational amplifier with 1.2µA maximum supply current per amplifier, rail-to-rail input and output, and 150kHz gain-bandwidth product, designed for ultra-low-power sensor signal conditioning in battery-powered instrumentation.
For engineers reviewing the MAX419CSD+T datasheet, MAX419CSD+T pinout, MAX419CSD+T application, or MAX419CSD+T equivalent, key selection criteria include its 1.2µA quiescent current per op-amp, 150kHz GBW, rail-to-rail I/O, ±0.5mV input offset voltage, and operation from +1.8V to +5.5V single supply - critical for precision, low-voltage analog front-ends.
Technical Context
The MAX419CSD+T integrates four independent amplifiers on a single die, each featuring p-channel input-stage MOSFETs enabling rail-to-rail input common-mode range down to VSS and up to VDD, and complementary output stage delivering rail-to-rail swing within 10mV of supply rails at 100kΩ load.
It operates from a single +1.8V to +5.5V supply with guaranteed performance over 0°C to +70°C ambient, uses standard 14-pin SO package (S14-1), and achieves 150kHz unity-gain bandwidth while maintaining 1.2µA typical supply current per amplifier - optimized for DC-coupled, low-frequency signal amplification where power budget is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct interface with Li-ion, coin-cell, or 3.3V/5V logic systems without level-shifting. |
| Quiescent Current (per amp) | 1.2µA max - supports multi-year battery life in always-on sensor nodes and portable medical devices. |
| Gain-Bandwidth Product | 150kHz - sufficient for DC–100Hz biomedical signals (ECG, EEG) and industrial transducer outputs (RTD, thermocouple). |
| Input Offset Voltage | ±0.5mV max - reduces DC error in high-gain sensor amplifiers without external trimming. |
| Input Common-Mode Range | Rail-to-rail (VSS to VDD) - allows direct sensing of ground-referenced or near-rail signals without biasing networks. |
| Output Swing | Rail-to-rail (within 10mV at 100kΩ) - maximizes dynamic range in low-voltage ADC interfacing. |
Pinout & Package
MAX419CSD+T is housed in a 14-pin small-outline (SO) package (S14-1), 5.0mm × 6.2mm body, 1.27mm pitch, JEDEC MS-012 compliant, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance input for first op-amp; accepts differential or single-ended signals referenced to system ground or mid-supply. |
| 2 | Noninverting Input A | High-impedance input for first op-amp; used in noninverting configurations or as reference node in instrumentation topologies. |
| 3 | Output A | Push-pull rail-to-rail output capable of sourcing/sinking ±20µA into 100kΩ load. |
| 4 | VSS | Ground reference for all four amplifiers; must be connected directly to PCB ground plane for noise immunity. |
| 5 | Inverting Input B | Input for second op-amp; identical electrical characteristics to Pin 1. |
| 6 | Noninverting Input B | Input for second op-amp; matches Pin 2 in offset, bias, and CMRR performance. |
| 7 | Output B | Output for second op-amp; fully independent from Output A, sharing only VSS and VDD. |
| 8 | VDD | Positive supply rail for all amplifiers; bypass with 0.1µF ceramic capacitor close to Pin 8. |
| 9 | Inverting Input C | Input for third op-amp; electrically isolated from other sections except shared supply rails. |
| 10 | Noninverting Input C | Input for third op-amp; maintains same input capacitance (2pF) and leakage (<1pA) as Pins 1 and 5. |
| 11 | Output C | Output for third op-amp; specified for rail-to-rail swing under same load conditions as Outputs A and B. |
| 12 | Inverting Input D | Input for fourth op-amp; matched input offset drift (0.5µV/°C) across all four channels. |
| 13 | Noninverting Input D | Input for fourth op-amp; shares same ESD protection structure (HBM >2kV) and input voltage range as other inputs. |
| 14 | Output D | Output for fourth op-amp; tested for phase margin >60° with 100pF capacitive load. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization from 0V to VDD without external level-shifting or dual supplies. |
| 1.2µA max supply current per amplifier | Reduces total quiescent power to <5µA for quad channel - ideal for energy-harvesting and wake-on-event systems. |
| ±0.5mV max input offset voltage | Minimizes DC error in 100× gain stages used with millivolt-level sensors (e.g., strain gauges, thermopiles). |
| 150kHz gain-bandwidth product | Supports stable unity-gain buffer and 10× inverting amplifiers for sub-15kHz signals without compensation. |
| Single +1.8V to +5.5V operation | Eliminates need for charge pumps or LDOs when interfacing with modern microcontrollers and ADCs. |
Applications
| Portable ECG Monitor Front-End | Wireless Sensor Node Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level cardiac signals from dry electrodes in a handheld ECG device powered by a CR2032 coin cell. IC Role / Device Role / Timing Role: Quad op-amp providing simultaneous instrumentation amplifier (A+B), right-leg drive (C), and lead-off detection (D) functions. Use Value: 1.2µA per amplifier extends battery life beyond 3 years in standby; rail-to-rail I/O captures full ECG waveform amplitude without clipping. | Use Scenario: Conditioning analog outputs from MEMS accelerometers and temperature sensors in a LoRaWAN-enabled environmental node. IC Role / Device Role / Timing Role: Configured as transimpedance amplifier (A), buffer (B), comparator hysteresis generator (C), and reference buffer (D). Use Value: Single 3.3V supply simplifies power architecture; 150kHz GBW ensures accurate digitization of vibration harmonics up to 10kHz. |
| Low-Power Industrial RTD Interface | Wearable Bio-Impedance Analyzer |
Use Scenario: Exciting 100Ω Pt100 RTDs with constant-current source and amplifying resulting mV signals in a battery-operated field transmitter. IC Role / Device Role / Timing Role: Used as current-source driver (A), differential amplifier (B), filter stage (C), and reference buffer (D). Use Value: ±0.5mV input offset minimizes temperature measurement error below ±0.1°C; rail-to-rail input accommodates 2-wire RTD bridge common-mode shift. | Use Scenario: Driving 50kHz AC excitation signals and measuring resultant voltage/current in skin-contact impedance spectroscopy for hydration monitoring. IC Role / Device Role / Timing Role: Functions as excitation buffer (A), transimpedance amplifier (B), synchronous demodulator input stage (C), and DAC output buffer (D). Use Value: 150kHz GBW supports clean 50kHz sine generation and detection; 1.2µA quiescent current enables continuous 24/7 operation on a 100mAh polymer cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, ultra-low-power, single-supply op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 22µA supply current per amp, 6.4MHz GBW, ±1.5mV offset - trades power for speed and precision. | Suitable for higher-bandwidth sensor interfaces (e.g., ultrasonic flow meters) but unsuitable for multi-year battery life targets. | Select TLV2464IDR only when >100kHz signal content requires faster settling and lower noise, accepting 18× higher quiescent power. |
| LTC1540CS8#TRPBF | Single-channel, 1.1µA IQ, no rail-to-rail output - limited to ultra-low-power single-function roles. | Used in discrete ultra-low-power comparators or reference buffers, not quad-signal-path applications. | Choose LTC1540CS8#TRPBF only for point-function replacement where quad integration is unnecessary and output swing tolerance permits. |
Compared with TLV2464IDR and LTC1540CS8#TRPBF, MAX419CSD+T uniquely delivers quad rail-to-rail I/O, 1.2µA per amplifier, and 150kHz GBW in one 14-pin SO package - making it the only option for space-constrained, multi-channel, sub-2µA-per-amp designs requiring full input/output voltage range.
Availability
MAX419CSD+T is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, and low-power industrial transmitters requiring stable component supply and long-term production continuity.
Supply support for MAX419CSD+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX406–MAX419 family was engineered specifically for ultra-low-power, single-supply signal conditioning in battery-critical systems - emphasizing sub-2µA per amplifier operation without sacrificing rail-to-rail I/O or DC accuracy.
FAQ
What is the operating temperature range for MAX419CSD+T?
The MAX419CSD+T is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade rating applies to the 'C' suffix variant and is validated across all electrical parameters including input offset voltage, supply current, and gain-bandwidth product. The device is not rated for extended industrial (-40°C to +85°C) or military (-55°C to +125°C) temperature ranges - those require MAX419E or MAX419M variants respectively.
Does MAX419CSD+T support rail-to-rail output swing under load?
Yes, MAX419CSD+T delivers rail-to-rail output swing within 10mV of VSS and VDD when driving a 100kΩ load. Performance degrades slightly with heavier loads: at 10kΩ, swing is within 50mV of rails. This behavior is fully characterized in the MAX419CSD+T datasheet Figure 3 and supports direct interfacing with 12-bit SAR ADCs operating from the same supply.
Can MAX419CSD+T be used with a 1.8V single supply?
Yes, MAX419CSD+T is fully specified and guaranteed to operate from +1.8V to +5.5V single supply. At 1.8V, it maintains 150kHz gain-bandwidth product, ±0.5mV input offset voltage, and rail-to-rail input common-mode range - enabling direct use with low-voltage microcontrollers and energy-harvesting PMUs without level translation.
How many operational amplifiers are integrated in MAX419CSD+T?
MAX419CSD+T integrates exactly four independent operational amplifiers in a single 14-pin SO package. Each amplifier has dedicated inverting input, noninverting input, and output pins - confirmed by the pinout table in the MAX419CSD+T datasheet and functional block diagram on page 2 of the MAX406–MAX419 family datasheet.
Is MAX419CSD+T pin-compatible with other devices in the MAX406–MAX419 family?
No, MAX419CSD+T is not pin-compatible with earlier members like MAX406 or MAX407, which are single/dual op-amps in 8-pin packages. Within the quad group, MAX419CSD+T shares identical 14-pin SO pinout with MAX418CSD and MAX419ESD, but differs from MAX419EPD (14-pin PDIP) in package footprint and thermal characteristics - requiring separate PCB layouts.
MAX419CSD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.08V/µs
- Gain Bandwidth Product:
- 150 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1µA (x4 Channels)
- Current - Output / Channel:
- 600 µA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX419CSD+T FAQ
1.How can I place an order for MAX419CSD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX419CSD+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX419CSD+T reliable?
The price and inventory of MAX419CSD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX419CSD+T is usually 5 days.
3.What payment methods are accepted for MAX419CSD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX419CSD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX419CSD+T?
MAX419CSD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX419CSD+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX419CSD+T?
For technical support, including MAX419CSD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX419CSD+T requirements.
6.How does Aetrix verify that MAX419CSD+T is sourced from the original manufacturer or authorized distributors?
All MAX419CSD+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX419CSD+T meets industry standards.
7.What is the process for return or replacement of MAX419CSD+T?
All MAX419CSD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX419CSD+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX419CSD+T part is unused and in its original packaging.
Return procedure for MAX419CSD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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